America’s criminal justice system needs repair. Prisons are overcrowded, sentencing policies are uneven and often unfair, ex-convicts are poorly integrated into society, and the growing problem of gang violence has not received the attention it deserves. For these and other reasons, a bill introduced last week by Senator Jim Webb, Democrat of Virginia, should be given high priority on the Congressional calendar.

The bill, which has strong bipartisan support, would establish a national commission to review the system from top to bottom. It is long overdue, and should be up and running as soon as possible.

The United States has the highest reported incarceration rate in the world. More than 1 in 100 adults are now behind bars, for the first time in history. The incarceration rate has been rising faster than the crime rate, driven by harsh sentencing policies like “three strikes and you’re out,” which impose long sentences that are often out of proportion to the seriousness of the offense.

Keeping people in prison who do not need to be there is not only unjust but also enormously expensive, which makes the problem a priority right now. Hard-pressed states and localities that reduce prison costs will have more money to help the unemployed, avert layoffs of teachers and police officers, and keep hospitals operating. In the last two decades, according to a Pew Charitable Trusts report, state corrections spending soared 127 percent, while spending on higher education increased only 21 percent. [...]